Some ways to reduce the clutter on screen could be:

-toggle on/off your own character's name

currently we can toggle off all names or none at all. Being able to toggle off your own name but keep others up would be good. This is pretty important in combat when you are using the mouse to target. You need /names on to tell which mobs are red. But clicking on your name makes you target yourself, and you can't click through your name to target other mobs. It gets very annoying.

Also, aesthetically, names floating above people's heads isnt always pleasing to the eye. We need to know the names of other people around us and also the names of mobs. Therefore we can live with having names above other peoples heads. We don't however need to know our own name... so it's pointless having it there.

-minimizable chat windows

Currently we can only shrink chat boxes to a certain size, but we can't minimise them entirely.